I love building, let's just get that out there.

My ground station consists of:

• 7" LCD monitor
• 7" Android tablet running DroidPlanner and Andropilot
• Digital video recorder (DVR) and remote control
• 5.8GHz video receiver (VRX)
• 915MHz telemetry tranceiver
• 5A 12V lead acid gel battery
• Video switch between DVR output and direct from VRX
• USB hub (no longer used for telemetry tranceiver, just a handy powered hub for powering/charging random stuff like phones and cameras)
• Voltage and current display
• Main switch
• Sun hood
• Tripod

The video switch is very useful. 

Here's a functional diagram:

I've replaced the Android tablet since this diagram was done.  The new tablet doesn't seem to allow the telemetry transceiver to work through a USB hub so now it's connected directly and the hub is just for powering random USB things like my phone which is still useful.

At left: GS showing output from DVR on the LCD screen.  The 7 segment display shows the current draw (700mA).

At right: Showing 'pure' VRX output.  The 7 segment display shows the voltage (12.1V).